CN101688640A - Lng storage tank insulation system having welded secondary barrier and construction method thereof - Google Patents

Lng storage tank insulation system having welded secondary barrier and construction method thereof Download PDF

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Publication number
CN101688640A
CN101688640A CN200780053556A CN200780053556A CN101688640A CN 101688640 A CN101688640 A CN 101688640A CN 200780053556 A CN200780053556 A CN 200780053556A CN 200780053556 A CN200780053556 A CN 200780053556A CN 101688640 A CN101688640 A CN 101688640A
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CN
China
Prior art keywords
thermal shield
natural gas
liquefied natural
supporting element
clamping bolt
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Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CN200780053556A
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Chinese (zh)
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CN101688640B (en
Inventor
闵季植
金外铉
尹重根
金大暎
金铉水
金秉满
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HD Hyundai Heavy Industries Co Ltd
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Hyundai Heavy Industries Co Ltd
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Filing date
Publication date
Priority claimed from KR1020070052106A external-priority patent/KR100782737B1/en
Priority claimed from KR1020070112826A external-priority patent/KR100935516B1/en
Application filed by Hyundai Heavy Industries Co Ltd filed Critical Hyundai Heavy Industries Co Ltd
Publication of CN101688640A publication Critical patent/CN101688640A/en
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Publication of CN101688640B publication Critical patent/CN101688640B/en
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C3/00—Vessels not under pressure
    • F17C3/02—Vessels not under pressure with provision for thermal insulation
    • F17C3/025—Bulk storage in barges or on ships
    • F17C3/027—Wallpanels for so-called membrane tanks
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2203/00—Vessel construction, in particular walls or details thereof
    • F17C2203/03—Thermal insulations
    • F17C2203/0304—Thermal insulations by solid means
    • F17C2203/0358—Thermal insulations by solid means in form of panels
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2209/00—Vessel construction, in particular methods of manufacturing
    • F17C2209/22—Assembling processes
    • F17C2209/221—Welding
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2209/00—Vessel construction, in particular methods of manufacturing
    • F17C2209/23—Manufacturing of particular parts or at special locations
    • F17C2209/232—Manufacturing of particular parts or at special locations of walls
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2221/00—Handled fluid, in particular type of fluid
    • F17C2221/03—Mixtures
    • F17C2221/032—Hydrocarbons
    • F17C2221/033—Methane, e.g. natural gas, CNG, LNG, GNL, GNC, PLNG
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2223/00—Handled fluid before transfer, i.e. state of fluid when stored in the vessel or before transfer from the vessel
    • F17C2223/01—Handled fluid before transfer, i.e. state of fluid when stored in the vessel or before transfer from the vessel characterised by the phase
    • F17C2223/0146—Two-phase
    • F17C2223/0153—Liquefied gas, e.g. LPG, GPL
    • F17C2223/0161—Liquefied gas, e.g. LPG, GPL cryogenic, e.g. LNG, GNL, PLNG
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2223/00—Handled fluid before transfer, i.e. state of fluid when stored in the vessel or before transfer from the vessel
    • F17C2223/03—Handled fluid before transfer, i.e. state of fluid when stored in the vessel or before transfer from the vessel characterised by the pressure level
    • F17C2223/033—Small pressure, e.g. for liquefied gas
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2270/00—Applications
    • F17C2270/01—Applications for fluid transport or storage
    • F17C2270/0102—Applications for fluid transport or storage on or in the water
    • F17C2270/0105—Ships
    • F17C2270/0107—Wall panels

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Filling Or Discharging Of Gas Storage Vessels (AREA)

Abstract

Disclosed herein is a Liquefied Natural Gas (LNG) storage/transportation tank insulation system having a welded secondary barrier and a construction method thereof. The LNG storage/transportation tankinsulation system is configured such that a plurality of secondary insulation panels, which is continuously mounted to be connected to a hull, is connected to the hull using coupling means, a secondary barrier is integrally formed on the secondary insulation panels by welding strakes, each of which is formed by processing a thin metal sheet, primary insulation panels are bonded to and mounted onthe secondary insulation panels using adhesive layers so that the primary insulation panels are staggered with the secondary insulation panels, after the adhesive layers are formed on the secondary barrier, and a primary barrier is mounted on the primary insulation panels, which are welded.

Description

LNG Liquefied natural gas storage tank adiabatic system and construction method thereof with secondary barrier of welding
Technical field
The present invention relates to a kind of LNG Liquefied natural gas (LNG) storage/transportation case adiabatic system and construction method thereof with secondary barrier of welding, more specifically, relate to a kind of LNG Liquefied natural gas storage/transportation case adiabatic system and construction method thereof with secondary barrier of welding, in the LNG Liquefied natural gas storage/transportation case adiabatic system of described secondary barrier with welding, inferior thermal shield is fixed on the housing by connection set, secondary barrier forms as one by the welding backplate, wherein each backplate is by processing by invar alloy (also claiming invar alloy (Invar alloy)), stainless steel, the foil that aluminum alloy etc. are made and forming, described main thermal shield and time thermal shield are stacked as alternately and make the edge of described main thermal shield and the edge of described thermal shield stagger mutually, and described main thermal shield is bonded on the described secondary barrier by Bond, thereby has improved adiabaticity significantly, the sealing of LNG Liquefied natural gas and easy constructivity.
Background technique
The low-temperature liquefaction method is mainly used in the goods and materials that store in large quantities and transport such as hydrogen, oxygen and rock gas.Therefore, it is extremely important to be used for the thermally insulated container of the extremely low liquid gas of storage temperature.When this kind of design thermally insulated container, prevent that liquid gas from being key technology because of the heat that transmits from the outside Thermo Isolation Technique that gasifies and the technology that prevents the liquid gas leakage.
The insulation method that adopts is divided into internal insulation method and external insulation method at present.The advantage of internal insulation method is because the wrappage of container can keep the temperature similar to ambient temperature, so the wrappage of this container aspect the use of material (for example cryogenic material) without limits.
Summary of the invention
Figure 31 shows the heat insulating construction of traditional LNG Liquefied natural gas means of transportation container container.This adiabatic system comprises the main thermal shield 510 on top and the inferior thermal shield 520 of bottom, and has the diaphragm type primary barrier 550 made by stainless steel and the two anti-wall construction of the secondary barrier 530 made by the Triplex material.Main thermal shield 510 and time thermal shield 520 have the thickness of 100mm and 170mm separately.In addition, in above-mentioned adiabatic system, when described thermal shield is installed on the inwall of adiabatic container container, sealing in order to ensure the LNG Liquefied natural gas of described secondary barrier junction, need carry out the operation of following two steps, promptly bond and seal the joining portion between the thermal shield described time, and on the described part that is sealing adhesive, connecting plate 540 (by making with the material identical materials of described main thermal shield) is installed by secondary barrier material 531 (by name " elasticity Triplex material ").Therefore, its problem is to expend a large amount of time and carries out operation, and when carrying out the structure of system, also must do one's utmost to note to guarantee the sealing of the LNG Liquefied natural gas of the gap location between the described secondary barrier.
In addition, above-mentioned traditional adiabatic system is constructed so that described main thermal shield is connected on the corresponding core of upper surface of described thermal shield in advance, two side portions at each described thermal shield then is formed with respective connecting, when being fixed on described thermal shield on the housing, avoiding and described main thermal shield is interfered, and described thermal shield is fixed on the described housing by described attachment hole.
But, in above-mentioned traditional adiabatic system, because respective connecting is arranged on the two side portions of each time thermal shield, therefore this time thermal shield planeness along the longitudinal direction can be controlled by instrument, but, because main thermal shield connects in advance and because the attachment hole on described thermal shield is positioned at the end of this time thermal shield, therefore the core of described thermal shield can not be controlled along the planeness of this time thermal shield horizontal direction.Therefore, the problem of generation is, for eliminating this shortcoming, must form a plurality of attachment holes on the two side portions of each time thermal shield.
Particularly, when forming a plurality of attachment hole as mentioned above, the various problems of generation is that adiabatic system may be subjected to negative influence, and need expend the plenty of time and assemble, thereby makes Operating Ratio.
The present invention is intended to address the above problem, an object of the present invention is to provide a kind of LNG Liquefied natural gas storage tank adiabatic system and construction method thereof with secondary barrier of welding, this adiabatic system and construction method thereof can be formed by formed each backplate of processing foil by welding, and main thermal shield can be bonded on the described secondary barrier integratedly, therefore can reduce workload and activity duration, and improve the stability of heat insulation layer.
Another object of the present invention provides a kind of LNG Liquefied natural gas storage tank adiabatic system and construction method thereof, this adiabatic system and construction method thereof can be supported on the housing inferior thermal shield is easy reliably by connection set, thereby have improved the simplification of assembling and overall easy constructivity.
Another object of the present invention is to form metal required workload and the activity duration of secondary barrier by adopting resistance welding to reduce, thereby has improved manufacturing efficiency.
Another object of the present invention provides a kind of LNG Liquefied natural gas storage tank adiabatic system and construction method thereof with secondary barrier of welding, this adiabatic system and construction method thereof can make this adiabatic system form by welding and Bond, thereby but improved easy constructivity and the simplification that realized assembling, good adiabaticity, to the sealing and the application property of LNG Liquefied natural gas.
Another object of the present invention provides a kind of LNG Liquefied natural gas storage tank adiabatic system and construction method thereof with secondary barrier of welding; this adiabatic system and construction method thereof can be installed in tongue piece on described thermal shield; thereby can be when each described backplate that welding forms by the processing foil described thermal shield of protection, and improve the LNG Liquefied natural gas sealing of described secondary barrier by welding described tongue piece and described backplate.
Another object of the present invention provides a kind of secondary barrier of one, because tongue piece is installed in described thermal shield and this tongue piece and each and every one backplate that forms by the processing foil are welded, therefore described secondary barrier can be realized good LNG Liquefied natural gas sealing.
Another object of the present invention provides a kind of LNG Liquefied natural gas storage tank adiabatic system and construction method thereof with secondary barrier of welding, wherein, by having realized being connected pressure along the longitudinal direction of described thermal shield and the uniform bolt of horizontal direction at the disposed inboard attachment hole of each time thermal shield, therefore control the planeness of longitudinal direction and horizontal direction, and improved join strength.
Another object of the present invention provides a kind of LNG Liquefied natural gas storage tank adiabatic system and construction method thereof with secondary barrier of welding, this adiabatic system and construction method thereof not only can improve the simplification of assembling by the quantity that reduces attachment hole, and described thermal shield can be fixed on the described housing reliably.
Another object of the present invention provides a kind of LNG Liquefied natural gas storage tank adiabatic system and construction method thereof with secondary barrier of welding, this adiabatic system and construction method thereof can and be installed on described thermal shield described main thermal shield bonding, and make described main thermal shield and described thermal shield stagger mutually, and on connecting plate, do not form the hole, therefore improved the heat-insulating property of adiabatic system.
The present invention is configured so that a plurality of the thermal shields of installing continuously to be connected in housing are connected in described housing by connection set, on described thermal shield, form secondary barrier by welding by processing formed each backplate of foil, when after forming described adhesive layer on the described secondary barrier, by adhesive layer bonding and main thermal shield is installed on described thermal shield, and make described main thermal shield and described thermal shield stagger mutually, and on the described main thermal shield of bonding and installation, primary barrier is installed.
In addition, the present invention is configured to along the disposed inboard of each described thermal shield attachment hole is arranged, by this attachment hole and connection set described thermal shield is fixed on the described housing, seal by in described attachment hole, inserting foam plugs, described main thermal shield is installed as makes the edge of described thermal shield and the edge of described main thermal shield stagger mutually then.
As mentioned above, in the present invention, described secondary barrier is integrally formed, and described main thermal shield is connected by bonding mode with described secondary barrier, thereby make described main thermal shield need not to use independent connection set just can fix reliably, guarantee the sealing of LNG Liquefied natural gas, and can improve the heat-insulating property between described main thermal shield and described the thermal shield.
In addition, in the present invention, described main thermal shield is installed on described thermal shield integratedly by Bond, thereby than can realize better assembling and easy constructivity by the fixing described main thermal shield of traditional connection set.
In addition, in the present invention, on described thermal shield and described main thermal shield, tongue piece is installed, thereby, when forming described secondary barrier, can prevent that this welding from causing damage to described thermal shield by welding manner.
In addition, in the present invention, be installed in described tongue piece on the thermal shield and weld, thereby can further improve the sealing of the LNG Liquefied natural gas of described secondary barrier with each the described backplate that forms by the processing foil.
In addition, when comparing with the existing method of making described secondary barrier by triple bondings, the present invention can reduce half with about 50 days manufacturing time, promptly only needs about 20 days manufacturing time, has therefore improved operation effectiveness and manufacturing efficiency.
In addition, the edge of the edge of described main thermal shield and described thermal shield staggers mutually, and in being installed, the described gap of connection set inserts thermoinsulation material, thereby make described gap can realize double seal, therefore the sealing of LNG Liquefied natural gas be can improve, and the reliability and the heat-insulating property of the heat-insulating property of described secondary barrier improved.
In addition, the width in the gap between the adjacent described main thermal shield can be preferably 4mm for 3 to 5mm.
In addition, in the present invention, all described time adjacent thermal shield fixed by connection set and supported, and therefore can easily construct described thermal shield and can reduce the activity duration.
In addition, in the present invention, described thermal shield fixed by connection set and supported, thereby the workman can easily carry out operation, therefore can improve the work effect.
In addition, in the present invention, the attachment hole that is used for fixing described thermal shield is arranged along the core of each described thermal shield, thereby can apply uniform bolt with horizontal direction along the longitudinal direction of described thermal shield and be connected pressure, therefore can improve described thermal shield along the longitudinal direction with the planeness of horizontal direction, and can reduce the degree of deformation of described thermal shield significantly.
In addition, the present invention can fix thermal shield described time reliably by a spot of attachment hole, thereby can increase the simplification and the easy constructivity of assembling.
In addition, in the present invention, the edge of described main thermal shield and the edge of described main thermal shield stagger mutually, thereby can prevent to reduce heat-insulating property because of the influence of the fastening piece of the fastening piece of described main thermal shield and described thermal shield.
Description of drawings
Fig. 1 is the generalized section that shows brief configuration of the present invention;
Fig. 2 is the enlarged view of the part A of Fig. 1;
Fig. 3 is the generalized section that shows according to first variant of the present invention;
Fig. 4 is the generalized section that shows according to second variant of the present invention;
Fig. 5 is the welded generalized section that shows second variant of the present invention;
Fig. 6 is the enlarged view of the part B of Fig. 1;
Fig. 7 is the schematic representation that shows according to the structure of connection set of the present invention;
Fig. 8 is the schematic representation that shows according to first variant of connection set of the present invention;
Fig. 9 is the schematic representation that shows according to second variant of connection set of the present invention;
Figure 10 is the schematic representation that shows according to the 3rd variant of connection set of the present invention;
Figure 11 is the schematic representation that shows according to the 4th variant of connection set of the present invention;
Figure 12 is the schematic representation that shows according to the 5th variant of connection set of the present invention;
Figure 13 is the schematic representation that shows according to the 6th variant of connection set of the present invention;
Figure 14 is the schematic representation that shows according to the 7th variant of connection set of the present invention;
Figure 15 is the schematic representation that shows according to the structure of the secondary barrier that is formed by foil of the present invention;
Figure 16 is the flow chart that shows according to mounting process of the present invention;
Figure 17 is the schematic representation that shows according to mounting process of the present invention;
Figure 18 is the part cut-away diagram that shows according to mounting structure of the present invention;
Figure 19 is the exploded perspective view that shows according to mounting structure of the present invention;
Figure 20 is the schematic representation that shows according to mounting structure of the present invention;
Figure 21 is the schematic representation that shows the assembly structure of the inferior thermal shield that adopts attachment hole;
Figure 22 is the schematic representation that shows according to the arrangement of attachment hole of the present invention;
Figure 23 shows the planeness of the inferior thermal shield that adopts the attachment hole assembling and the schematic representation of degree of deformation;
Figure 24 shows the main thermal shield of employing attachment hole assembling and the schematic representation of the relation of the position between the inferior thermal shield;
Figure 25 is the schematic representation that shows according to the degree of deformation of embodiment of the present invention;
Figure 26 is the schematic representation that shows according to the first modified arrangement mode of attachment hole of the present invention;
Figure 27 is the schematic representation that shows according to the second modified arrangement mode of attachment hole of the present invention;
Figure 28 is the schematic representation that shows according to the 3rd modified arrangement mode of attachment hole of the present invention;
Figure 29 is the schematic representation that shows the arrangement of traditional attachment hole;
Figure 30 is the schematic representation that shows the caused degree of deformation of arrangement of traditional attachment hole; And
Figure 31 is the schematic representation that shows the heat insulating construction of traditional liquified natural gas carrier (LNGC) cargo hold.
Accompanying drawing primary component description of symbols:
10: main thermal shield 11: upper plate
12: welding appliance 13: thermoinsulation material
14: gap 20: inferior thermal shield
21: upper plate 22: lower plate
23: thermoinsulation material 24: the tongue piece insertion groove
25: tongue piece 26: insert thermoinsulation material
27: gap 28: insertion groove
29: hole 29 ': attachment hole
20a: attachment hole 20b: attachment hole (traditional adiabatic system)
20c: insert thermoinsulation material 40: primary barrier
42: gauffer 50,50a, 50b: secondary barrier
54,54a, 54b: foil backplate 55,55b: weldment
56,56a, 56b: welding part 51a, 51b: metal insert
60: adhesive layer 61: spacing
70: housing 80: housing/thermal shield link
81: horizontal wedge 82: adhesive
90: connection set 90a: the connection set of first variant
90b: the connection set 90c of second variant: the connection set of the 3rd variant
90d: the connection set 90e of the 4th variant: the connection set of the 5th variant
90f: the connection set 90g of the 6th variant: the connection set of the 7th variant
91,91a, 91b, 91c, 91d, 91e, 91f, 91g: clamping bolt
92,92a, 92b, 92c, 92e, 92f: supporting element
93,93a, 93b, 93c, 93d, 93e, 93f, 93g: tightening nut
94,94a, 94b, 94c, 94e, 94f: hole
95b: attachment portion 92d: first supporting element
94d: attachment hole 95d: screw thread
96d: dunnage 97d: patchhole
98d: the second supporting element 95c, 95f: thumbpiece
96c, 96f: first wing 97c, 97f: second wing
200: the second heat insulation layers of 100: the first heat insulation layers
Embodiment
The present invention is configured to use connection set 90 that a plurality of thermal shields 20 are connected on the housing 70, this time thermal shield 20 is installed on the housing 70 of storage tank continuously, by being welded on described thermal shield 20, backplate 54 forms secondary barrier 50, wherein each described backplate 54 forms by the processing foil, on described secondary barrier 50, be formed with adhesive layer 60, main thermal shield 10 is bonded as by this adhesive layer 60 and makes this main thermal shield 10 stagger mutually with time thermal shield 20, and on the main thermal shield 10 that this bonding is installed primary barrier 40 is installed.
That is to say, the present invention includes: a plurality of thermal shields 20, this time thermal shield 20 are installed continuously and are connected on the described housing 70 by housing/thermal shield link 80; Connection set 90, this connection set 90 and are configured to described thermal shield is fixed on the described housing 70 between adjacent inferior thermal shield; Secondary barrier 50, this secondary barrier 50 are positioned on described thermal shield, and form as one by the welding backplate, and wherein each described backplate forms by the processing metal sheet; Main thermal shield 10, this main thermal shield is positioned on the described secondary barrier, and is arranged so that the edge of this main thermal shield and the edge of described thermal shield stagger mutually; Adhesive layer 60, this adhesive layer 60 and are bonded to described main thermal shield 10 integral body on the described secondary barrier 50 between described main thermal shield 10 and described secondary barrier 50; And primary barrier 40, this primary barrier 40 is welded on the upper surface of described main thermal shield 10.
The primary barrier 40 that is installed on the described main thermal shield has a plurality of gauffers 42, and this gauffer 42 raises up, so that described primary barrier 40 can be easy to expand and shrink according to the caused temperature variation of goods of loading.
Described secondary barrier is made by metallic material, for example make by invar alloy, stainless steel or aluminum alloy, this secondary barrier forms as one keeping the sealing to LNG Liquefied natural gas by welding, and is connected on described thermal shield and is securely fixed on this time thermal shield.
Describe the present invention in detail below in conjunction with accompanying drawing (being Fig. 1 to Figure 30).
Fig. 1 is the generalized section that shows brief configuration of the present invention, Fig. 2 is the enlarged view of the part A among Fig. 1, Fig. 3 is the generalized section that shows according to first variant of the present invention, Fig. 4 is the generalized section that shows according to second variant of the present invention, Fig. 5 is the welded generalized section that shows the present invention's second variant, and Fig. 6 is the enlarged view of the part B among Fig. 1.
In the LNG Liquefied natural gas storage tank adiabatic system of secondary barrier with welding, a plurality of thermal shields 20 are installed as continuously and form second heat insulation layer 200, a plurality of main thermal shields 10 are installed on time thermal shield 20 continuously to form first heat insulation layer 100, secondary barrier 50 is installed between first heat insulation layer 100 and second heat insulation layer 200, primary barrier 40 is installed on first heat insulation layer 100, the present invention is configured to use connection set to fix and be supported on inferior thermal shield on the housing reliably, described secondary barrier is integrally connected on described thermal shield by welding backplate (each backplate by processing foil form), described main thermal shield is stacked as and makes the edge of this main thermal shield and the edge of described thermal shield stagger mutually by being coated in adhesive layer on the described secondary barrier, and described primary barrier is formed on the described main thermal shield.
Secondary barrier 50 is installed on described thermal shield, and form as one as follows: be about to backplate 54 and be inserted between the tongue piece 25 that is installed on the adjacent inferior thermal shield, and as Fig. 1 and shown in Figure 15, the respective end portions of each backplate 54 is welded on the tongue piece 25 that contacts with this backplate 54.
That is to say that the secondary barrier 50 that is positioned on time thermal shield 20 forms by backplate 54 is welded on the tongue piece 25, described tongue piece 25 is inserted in the tongue piece insertion groove 24 of described thermal shield.
Tongue piece 25 is used for being connected to described secondary barrier (forming by welding) on described thermal shield and supporting this secondary barrier.Tongue piece 25 inserts and installs along a direction of described thermal shield.That is to say that tongue piece 25 is installed as and makes this tongue piece bottom separately pass the upper plate of described thermal shield, and insert in described thermal shield that this tongue piece top separately protrudes into the outside of the upper plate of described thermal shield.
As Fig. 1 and shown in Figure 15, the respective end portions of each backplate 54 (forming by the processing foil) is provided with weldment 55.Weldment 55 forms so that the two ends of this backplate project upwards respectively by the two ends that bend each backplate 54.That is to say, upwards bending of described backplate 54 so that the two ends of this backplate have identical height, and as mentioned above, by the formed weldment of give prominence to by bending of part corresponding to welding to be welded part 56.
When backplate 54 was installed, tongue piece 25 was installed as the core that makes these tongue pieces 25 pass each time thermal shield 20 and stretches out, and as shown in figure 15, weldment 55 contacts with tongue piece 25, and forms as one with tongue piece 25 by welding.
That is to say that the weldment 55 that is positioned at the respective end of each backplate 54 is installed as with tongue piece 25 (being installed on the adjacent inferior thermal shield) and contacts, and the weldment 55 that is in contact with one another and tongue piece 25 form one to keep tightness each other by resistance welding.
Inferior thermal shield 20 is by thermoinsulation material 23, be that polyurethane is made, this time thermal shield 20 is installed on described housing/thermal shield link, and is constructed so that the upper plate 21 made by timber or synthetic resin and the lower plate 22 made by timber, synthetic resin or metal sheet forms as one with the upper and lower surface of this time thermal shield 20 respectively.
In addition, inferior thermal shield 20 forms and makes lower plate 22 stretch out manyly than thermoinsulation material 23 (being polyurethane), perhaps makes lower plate 22 have identical length with thermoinsulation material 23.On the lower limb of the thermoinsulation material 23 that the upper surface with lower plate 22 contacts, can be formed with the insertion groove 28 of predetermined depth.
That is to say, be formed with insertion groove 28, and the upper surface at lower plate 22 edges exposes because of insertion groove 28 along the inside direction of described thermoinsulation material.
In addition, as depicted in figs. 1 and 2, be formed with tab insertion holes 24 "T"-shaped or " L " shape on the corresponding core of the upper plate of described thermal shield, the tongue piece 25 of described secondary barrier is inserted in this tab insertion holes 24 along a direction of time thermal shields 20.That is to say that the tongue piece 25 of described secondary barrier is inserted in the corresponding tab insertion holes 24 on the center region of the upper plate that is formed on described thermal shield, and supports the described main thermal shield that will be connected with described secondary barrier.
Tab insertion holes 24 forms by the part that contacts with upper plate 21 of machining upper plate 21 with time thermal shield 20, and be configured to form 1 to 5mm dark depression so that tongue piece 25 can insert the corresponding center region on time thermal shield 20 tops, as shown in Figure 2, a direction along time thermal shield 20 forms tab insertion holes 24 by the top that upper plate 21 (upper plate 21 is split into two or more parts) is bonded to described depression.
Be recessed to form conventional construction on the stiffening plate of making by timber compared with connection, the be more convenient for processing and detect defective of the tab insertion holes 24 of said structure, and when manufacturing is provided with second heat insulation layer 200 of tab insertion holes 24, have numerous advantages.
Above-mentioned secondary barrier of the present invention is formed integrally as and makes described tongue piece be inserted in the corresponding tab insertion holes, this tab insertion holes is formed on the center region on the top of time thermal shield 20 along a direction of time thermal shield 20, and the weldment 55 that is formed on each backplate 54 respective end is welded on the part of the tongue piece 25 that the direction that makes progress along time thermal shield protrudes.
The weldment 55 of each backplate 54 is welded on the tongue piece 25, and the bending part of the tongue piece 25 of welding is supported and is fixed in this tab insertion holes 24 by the tab insertion holes on the upper plate 21 that is formed on time thermal shield 20 24.In this case, in order to increase the join strength between secondary barrier 50 and the inferior thermal shield 20, the part that constitutes the upper plate 21 of the bottom of described backplate of described secondary barrier and the inferior thermal shield 20 that contacts with backplate 54 can be used Bond to bond and be fixing.
In addition, in order to make the inferior thermal shield of described connection form airtight sealing, forming the tongue piece 25 of secondary barrier 50 and the length of backplate 54 should be enough to cover a plurality of times thermal shield.
In addition, extremely shown in Figure 5 as Fig. 3, the secondary barrier of described welding can form by two or more adjacent backplates of welding in the upper plate that the weld metal inserting member is inserted into each time thermal shield and on this weld metal inserting member, perhaps by the weld metal inserting member of welded and installed on the upper plate of each time thermal shield with the backplate that contacts with the weld metal inserting member of this installation and weld adjacent backplate end and form.
That is to say that Fig. 3 is the generalized section that shows according to first variant of secondary barrier of the present invention.Secondary barrier 50b forms as follows, being about to weld metal inserting member 51b is installed on the upper plate of each time thermal shield, the metal insert 51b of this welding is welded to the end of the backplate 54b that contacts with weld metal inserting member 51b, and the edge of adjacent backplate 54b is in contact with one another and welds together.In this case, the weldment 55b that is used to weld is formed on the respective end portions of backplate 54b.
That is to say, the present invention is configured on the upper plate of each time thermal shield at least one weld metal pieces 51b is installed, the weld metal inserting member is welded to one another together with the part of the backplate 54b that contacts with the metal insert of this welding, and the weldment of adjacent backplate welds together by the mode of contact, thereby forms the secondary barrier 50b of one.
As shown in Figure 3, metal insert 51b is installed on the respective edges part of upper plate of each time thermal shield, one or more metal insert 51b perhaps are installed, and the part of the described backplate that contacts with metal insert 51b is welded and is connected on the welding portion 56b on the arbitrary position of each upper plate.
In addition, Fig. 4 is the generalized section that shows according to second variant of secondary barrier of the present invention.Secondary barrier 50a forms as follows, be about to weld metal inserting member 51a and be installed on the upper plate of each time thermal shield, and the backplate 54a that two or more are adjacent and weld metal inserting member 51a welds together.That is to say that secondary barrier 50a welds together by the backplate 54a that the weld metal inserting member is adjacent with two or more and forms on weld metal inserting member 50a.
In this case, as shown in Figure 5, backplate 54a forms as one each other by welding manners such as fillet welding, butt welding, joint welding.
Above-mentioned secondary barrier 50a of the present invention, 50b, 50 form as follows: be about to metal insert 51a, in 51b or described thermal shield of tongue piece 25 insertions, and with backplate 54a, 54b, 54 (each backplate forms by the processing foil) are welded to metal insert 51a, on 51b or the tongue piece 25.The secondary barrier of above-mentioned welding of the present invention is not limited to above-mentioned variant, but can comprise the secondary barrier of any welding that forms as one by welding.
In addition, adhesive layer 60 is by being coated to Bond according to the present invention of said structure or the secondary barrier 50 of variant of the present invention, 50a with predetermined interval, or the top of 50b, be backplate 54a, 54b or 54 top and form, and main thermal shield 10 is bonded on the adhesive layer 60 of formation.Thereby make this main thermal shield 10 and adhesive layer 60 form as one.
Lower plate 22 is made by timber, synthetic resin or metal sheet, and be installed on housing/thermal shield link 80, lower plate 22 supports and is fixed as and makes the edge section of this lower plate 22 directly contact with connection set 90, and this connection set pushes the edge section of this lower plate 22.That is to say that all time thermal shield 20 is fixed by the fixing and support of above-mentioned lower plate 22.
Each housing/thermal shield link 80 comprises: horizontal wedge 81, this horizontal wedge 81 are configured to have predetermined enabling capabilities when by described connection set described thermal shield being installed; And adhesive 82, this adhesive 82 is a kind of being used for described thermal shield to be fixed to preparation on the described housing.
Connection set 90 is used for described thermal shield supported to described housing reliably, and can inferior thermal shield 20 be fixed on the housing 70 by the cooperation between clamping bolt and the tightening nut.
That is to say that each connection set comprises: clamping bolt, this clamping bolt are fixed and are supported on the described housing; Supporting element, this supporting element is provided with porose, and described clamping bolt passes this hole, and described supporting element is pressed against the lower plate of described thermal shield; And tightening nut, this tightening nut is connected to the end of the described clamping bolt in the hole of passing described supporting element, thus fixing described supporting element.In described thermal shield, this time thermal shield forms and makes described lower plate stretch out manyly than described thermoinsulation material (being polyurethane), connection set of the present invention can adopt clamping bolt and tightening nut directly to support the lower plate of described thermal shield, and need not to use any supporting element.
In addition, for the connection between clamping bolt shown in the realization and the tightening nut, below tightening nut 93, the rubber-like packing ring can be installed.
Describe in detail according to connection set of the present invention below in conjunction with accompanying drawing.In addition, to shown in Figure 14, can have multiple variant and structure according to the structure of inferior thermal shield and the structure of supporting element as Fig. 6 according to connection set of the present invention.
Fig. 6 to Figure 11 shows the connection set of time thermal shield, wherein said thermal shield forms and makes the lower plate of this time thermal shield stretch out manyly than the polyurethane adiabatic material, Figure 12 and Figure 13 show the connection set of time thermal shield, wherein time thermal shield is shaped so that described insertion groove is formed on the edge section of the thermoinsulation material bottom that contacts with described lower plate, and Figure 14 shows the connection set be used for need not by clamping bolt and fixing described the thermal shield of tightening nut any supporting element, and wherein said thermal shield forms and make the edge section of lower plate of this time thermal shield stretch out manyly than described polyurethane adiabatic material.
Fig. 6 is the enlarged view of the part A among Fig. 1, and Fig. 7 is the schematic representation that shows according to connection set of the present invention.Connection set 90 according to the present invention comprises: clamping bolt 91, this clamping bolt 91 are fixed on the described housing and between adjacent inferior thermal shield; Supporting element 92, this supporting element 92 are configured to be formed with the hole 94 that is used to insert clamping bolt at interval with rule on this supporting element 92, and the downside surface of this supporting element 92 contacts with the upper surface of the edge section of the lower plate of described thermal shield 20; And tightening nut 93, this tightening nut 93 is connected to the hole 94 of passing described supporting element and the respective end portions of stretching out clamping bolt 91.
The connection set 90 of said structure is fixed as described thermal shield 20 and makes the both sides lower surface of supporting element 92 contact with the upper surface of the lower plate that stretches out 22 of described thermal shield and supported by the upper surface of this lower plate that stretches out 22.Therefore, when the connection carried out between tightening nut 93 and the clamping bolt 91, supporting element 92 presses and is supported on whole lower plates 22 of adjacent inferior thermal shield.
That is to say that as shown in Figure 6 and Figure 7, connection set 90 of the present invention is constructed so that the edge section of adjacent inferior thermal shield 20 by 92 supports of single supporting element, and a plurality of clamping bolt 91 is inserted in this supporting element 92.
Fig. 8 is the schematic representation that shows according to first variant of connection set of the present invention.The connection set 90a of first variant comprises: clamping bolt 91a, this clamping bolt 91a are fixed on the described housing and between adjacent inferior thermal shield; Supporting element 92a, this supporting element 92a is provided with the hole 94a that is used to insert described clamping bolt, and this supporting element 92a is constructed so that the both sides lower surface of this supporting element contacts with the upper surface of the edge section of the lower plate of described thermal shield; And tightening nut 93a, this tightening nut 93a is connected to the end of hole 94a that passes described supporting element and the clamping bolt 91a that stretches out.
That is to say that the structure of the supporting element of the connection set 90a of first variant shown in Figure 8 by changing Fig. 6 and connection set shown in Figure 7 realizes.The supporting element 92 of Fig. 6 and connection set 90 shown in Figure 7 has long plate shape, is formed with a plurality of holes 94 that are used to insert clamping bolt at interval with rule on this long slab.In contrast, the supporting element 92a of connection set 90a shown in Figure 8 has the short slab shape, only is formed with a hole 94a who is used to insert clamping bolt on this short slab.
As mentioned above, the connection set shown in Fig. 6 and Fig. 7 can use the adjacent inferior thermal shield of single supports support, and first variant shown in Figure 8 can be by the adjacent inferior thermal shield of a plurality of supports support.Therefore, above-mentioned connection set has advantage separately in installation with aspect realizing fixing reliably.
In addition, Fig. 9 is the schematic representation that shows according to second variant of connection set of the present invention.The connection set 90b of second variant comprises: clamping bolt 91b, this clamping bolt 91b are fixed on the described housing and between adjacent inferior thermal shield; Supporting element 92b, this supporting element 92b is configured to be formed with the hole 94b that is used to insert described clamping bolt on this supporting element 92b, and make the attachment portion 95b that protrudes along downward direction from the respective end portions of this supporting element 92b be inserted in the respective connecting 29 ', this attachment hole 29 ' is formed on the edge section of lower plate of described thermal shield; And clamping bolt 93b, this clamping bolt 93b is connected to the end of the clamping bolt 91b that passes in the hole 94b of described supporting element and stretch out.
That is to say, described attachment portion 95b forms from the respective end portions of this supporting element 92b and protrudes in a downward direction, and attachment hole 29 ' is formed on the lower plate that stretches out 22 of described thermal shield, therefore the supporting element 92b of the connection set 90b of second variant supports thermal shield as follows described time, promptly make described attachment portion be inserted into to be formed in the described attachment hole on the corresponding lower plate of described thermal shield, and make described tightening nut be connected to the end of the described clamping bolt that passes from the hole of described supporting element.
The connection set 90b of said structure can make the attachment portion of described supporting element be inserted in the respective connecting on the lower plate that is formed on described thermal shield, thereby can fix thermal shield more reliably described time.
In addition, Figure 10 is the schematic representation that shows according to the 3rd variant of connection set of the present invention.Connection set 90c comprises: clamping bolt 91c, this clamping bolt 91c are fixed on the described housing and between adjacent inferior thermal shield; Supporting element 92, this supporting element 92 is configured to be formed with the hole 94c that is used to insert described clamping bolt at interval with rule on this supporting element 92, and makes the thumbpiece 95c that stretches out in the upward direction from the respective end portions of this supporting element 92 contact with the upper surface of the lower plate of described thermal shield; And clamping bolt 93c, this clamping bolt 93c is connected to the end of the described clamping bolt that passes in the corresponding hole of described supporting element and stretch out.
That is to say that the supporting element of the connection set of the 3rd variant forms and makes thumbpiece 95c stretch out in the upward direction from the end of this supporting element.Each thumbpiece 95c comprises first wing 96c and second wing 97c, and wherein said first wing 96c forms along the direction that makes progress of described supporting element and stretches out, and described second wing 97c stretches out and perpendicular to first wing from the outside direction of the upper end edge of described first wing.
The connection set 90c of the present invention's the 3rd variant of said structure supports thermal shield as follows described time, promptly when clamping bolt 91c is connected with tightening nut 93c, make the side surface of first wing 96c of supporting element 92c contact, and make the lower surface of second wing 97c contact with the corresponding upper surface of the edge section of the lower plate of described thermal shield with the corresponding side surface of the lower plate of described thermal shield.
In addition, Figure 11 is the schematic representation that shows according to the 4th variant of connection set of the present invention.Connection set 90d comprises: clamping bolt 91d, this clamping bolt 91d are fixed on the described housing and between adjacent inferior thermal shield; First supporting element 92, this first supporting element 92 is provided with attachment hole 94d and dunnage 96d, and the outer surface of this first supporting element 92 is formed with screw thread 95d, and wherein said attachment hole 94d is threaded with clamping bolt 91d, and the bottom of described dunnage 96d contacts with the lower surface of described lower plate; The second supporting element 98d, this second supporting element 98d is provided with patchhole 97d, the first supporting element 92d with screw thread 95d is inserted in this patchhole 97d, and this second supporting element 98d is installed as and makes the lower surface of this second supporting element contact with the upper surface of described lower plate; And tightening nut 93d, this tightening nut 93d is connected on the screw thread 95d of described first supporting element, and this first supporting element passes in the patchhole 97d of described second supporting element and stretches out.
That is to say, the connection set 90d of the 4th variant fixes thermal shield described time as follows reliably by the described first supporting element 92d and the second supporting element 98d, being about to the first supporting element 92d is connected on the clamping bolt 91d, locate thermal shield continuously described time, the second supporting element 98d is installed on the first supporting element 92d, so that the second supporting element 98d contacts with the upper surface of the lower plate of described thermal shield, and tightening nut 93d is connected on the screw thread 95d of described first supporting element that passes in the patchhole 97d of described second supporting element and stretch out.
In addition, Figure 12 is the schematic representation that shows according to the 5th variant of connection set of the present invention.Connection set 90e comprises: clamping bolt 91e, this clamping bolt 91e are fixed to described housing and between described adjacent inferior thermal shield; Supporting element 92e, this supporting element 92e is provided with porose 94e, described clamping bolt is inserted in the 94e of this hole, and this supporting element 92e is constructed so that the respective end portions of this supporting element 92e is inserted in the insertion groove 28 on the thermoinsulation material that is formed on described thermal shield, and the end of the insertion of supporting element 92e contacts with the upper surface of the edge section of the lower plate of described thermal shield; And tightening nut 93e, this tightening nut 93e is connected to the end of the described clamping bolt 91e that passes in the hole 94e of described supporting element and stretch out.
That is to say, the supporting element of the connection set of the 5th variant is used for fixing described the thermal shield that is formed with insertion groove 28, and support this time thermal shield as follows, being about to clamping bolt 91e is installed on the described housing, described supporting element is installed as the hole that makes described clamping bolt pass described supporting element, the respective end portions of described supporting element is inserted in the above insertion groove of thermoinsulation material that is formed on described thermal shield, make the lower surface of end of described supporting element contact, and described tightening nut is connected on the clamping bolt in the hole of passing described supporting element with the upper surface of the lower plate of described thermal shield.
The connection set 90e of said structure can make the lower plate of the inferior thermal shield after installing not stretch out from described thermoinsulation material, and has the length identical with this thermoinsulation material, therefore good heat-insulating property not only can be realized, and thermal shield can be fixed reliably described time.
In addition, Figure 13 is the schematic representation that shows according to the 6th variant of connection set of the present invention.This connection set 90f comprises: clamping bolt 91f, this clamping bolt 91f are fixed on the described housing and between adjacent inferior thermal shield; Supporting element 92f, this supporting element 92f is provided with porose 94f, described clamping bolt is inserted in the 94f of this hole, and this supporting element 92f is constructed so that thumbpiece 95f stretches out from the respective end portions of this supporting element in the upward direction, and contacts with the going up table of lower plate of described thermal shield; And tightening nut 93f, this tightening nut 93f is connected to the end of the clamping bolt 91f that passes in the hole 94f of described supporting element and stretch out.
That is to say that the supporting element of the connection set of the 6th variant forms and makes thumbpiece 95f protrude from the respective end portions of this supporting element in the upward direction.Each thumbpiece 95f comprises first wing 96f and second wing 97f, and wherein said first wing 96f forms along the direction that makes progress of described supporting element and stretches out, and described second wing 97f stretches out and perpendicular to first wing from the outside direction of the upper end edge of first wing 96f.
The connection set of the present invention's the 6th variant of said structure supports thermal shield as follows described time, be that described clamping bolt and described tightening nut interconnect, the side surface of first wing of described supporting element contacts with the corresponding side surface of the lower plate of described thermal shield, and the lower surface of described second wing contacts with the corresponding upper surface of the edge section of the lower plate of described thermal shield.
The supporting element of the connection set of the 6th variant of said structure forms only has a hole that is used to insert clamping bolt.In contrast, the supporting element of the connection set of the 3rd variant shown in Figure 10 is formed with a plurality of holes that are used to insert described clamping bolt at interval with rule.
That is to say, the 6th variant shown in Figure 13 can be by the adjacent inferior thermal shield of a plurality of supports support, and the 3rd variant shown in Figure 10 can be by two adjacent inferior thermal shields of single supports support, and in the described insertion groove of the thermoinsulation material that the 6th variant can make the thumbpiece of described supporting element be inserted into to be formed on described thermal shield, therefore good heat-insulating property not only can be realized, and thermal shield can be fixed reliably described time.
Figure 14 is the schematic representation that shows according to the 7th mode of execution of connection set of the present invention.The connection set 90g of the 7th mode of execution shown in Figure 14 can only fix described thermal shield by clamping bolt and tightening nut, and does not need to install any supporting element.That is to say, described time thermal shield can be directly fixing as follows, being about to clamping bolt 91g is fixed on the described housing, on the edge section of described lower plate, form porose 29, this hole 29 is constructed so that described clamping bolt is inserted in this hole 29 and stretches out from this hole 29, described lower plate forms and stretches out manyly than described polyurethane adiabatic material, and tightening nut 93g is connected on the respective end portions of the clamping bolt 91g that passes in the described hole 29 and stretch out.
As mentioned above the connection set of An Zhuaning can directly fixedly form stretch out the lower plate of Duoing than the thermoinsulation material of described thermal shield, therefore install simple and easy and can realize reliable enabling capabilities.
As mentioned above, in the present invention, described time thermal shield also is fixed on the described housing to connection set shown in Figure 14 is continuous reliably by Fig. 6.
In addition, in second heat insulation layer that the inferior thermal shield by above-mentioned continuous installation forms, the gap 27 that is used to install described connection set is formed between the described adjacent inferior thermal shield, and is inserted with thermoinsulation material 26 in this gap 27.In this case, thermoinsulation material 26 is identical with the thermoinsulation material of main thermal shield 10 and time thermal shield 20, perhaps can be some other known materials with good thermo-insulation properties.
Adhesive layer 60 is formed on the secondary barrier 50 that forms as one by welding, and predetermined distance is spaced apart from each other, so that the respective end portions of described adhesive layer can not reach the weldment 55 of each backplate, that is to say, between the end of weldment 55 and adhesive layer 60, be formed with spacing 61.In this case, preferably, adhesive layer 60 forms by polyurethane adhesive.
In addition, preferably, the width of the described adhesive layer 60 of each of formation all about 60% (preferably about 70%) of the width between the two ends of each backplate to 90% scope.That is to say, each described adhesive layer 60 form make that its width is less than above-mentioned 60% situation under, the retention force of described main thermal shield can reduce, and therefore preferably main thermal shield is bonded on the described secondary barrier, and makes the width of described adhesive layer be equal to or greater than above-mentioned 60%.
Main thermal shield 10 is installed by the adhesive layer that is formed on the described secondary barrier, and is constructed so that the upper plate of being made by timber or synthetic resin 11 is integrally formed on the upper surface of described polyurethane adiabatic material 13.
In addition, welding appliance 12 is installed on described upper plate 11, thus when described primary barrier 40 when being welded to connect on the described main thermal shield 10, this main thermal shield 10 can be protected and weld easily.
In addition, the polyurethane adiabatic material 13 and the upper plate 11 of main thermal shield 10 are adhered to one another, and the polyurethane adiabatic material 23 of inferior thermal shield 20, upper plate 21 and lower plate 22 also are adhered to one another.
In addition, the gap 14 that is positioned with the weldment of described tongue piece and described backplate is formed between the adjacent main thermal shield.These gaps form has about width of 3 to 5mm, preferably has the width of 4mm.
That is to say that described main thermal shield is bonded on the described secondary barrier by adhesive layer integral body, and make described main thermal shield closely be installed as the distance that makes between the adjacent described main thermal shield to be small enough in 3 to 5mm the scope, thereby improve heat-insulating property.
Described primary barrier 40 is installed as and is positioned on the described main thermal shield 10, and forms by the stainless steel metal plate with gauffer 42 is installed on described main thermal shield 10 continuously.In this case, on the welding appliance 12 of adjacent described main thermal shield, weld two or more stainless steel metal plates, thereby make stainless steel metal plate form described primary barrier 40 with described gauffer by welding manner.
In addition, in the present invention, the gauffer 42 of described primary barrier forms on the two ends and core that are positioned at each described main thermal shield, thereby wideer than the gauffer orientation range of the primary barrier of prior art.
Figure 16 is the flow chart that shows according to mounting process of the present invention, Figure 17 is the schematic representation that shows according to mounting process of the present invention, Figure 18 is the schematic representation that shows according to the part excision of mounting structure of the present invention, Figure 19 is the exploded perspective view that shows according to mounting structure of the present invention, and Figure 20 is the schematic representation that shows according to mounting structure of the present invention.The present invention includes: described housing/thermal shield link 80 and described connection set (being described clamping bolt) are installed in first installation steps on the described housing; Described thermal shield 20 is installed to inferior thermal shield installation steps on described housing/thermal shield link continuously; By connection set the described time whole adjacent thermal shield of being installed 20 is fixedly coupled step; The secondary barrier that forms described secondary barrier by welding a plurality of backplates that formed by the processing foil on described time fixing thermal shield 20 forms step; The adhesive layer that forms described adhesive layer 60 by coated with adhesive on the described secondary barrier 50 that forms forms step; By described adhesive layer 60 bondings that apply and the main thermal shield installation steps that described main thermal shield 10 is installed; And the two ends and the primary barrier on the core that form described primary barrier 10 and make described gauffer 42 be positioned at each described main thermal shield by the stainless steel metal sheet that welding on described main thermal shield 10 is provided with described gauffer 42 form step.
First installation steps are that described housing/thermal shield link 80 and described connection set (being clamping bolt and adhesive) are installed in the step on the described housing.In this step, a plurality of described clamping bolts are installed on the described housing with regular spaces, so that the adiabatic system of LNG Liquefied natural gas means of transportation container container can be fixed on the described housing, the a plurality of described housing/thermal shield link 80 that is used to support described adiabatic system and this adiabatic system is fixed on the described housing is installed between the described clamping bolt, and, between described horizontal wedge, be provided with adhesive 82 horizontal wedge 81 being installed near on the position of described clamping bolt.
In inferior thermal shield installation steps, a plurality of thermal shields are installed as continuously and make this time thermal shield 20 be positioned at described horizontal wedge and on the described adhesive between this horizontal wedge.
Described Connection Step can carry out as follows, the clamping bolt that is about to be fixed on the described housing is inserted in the hole that is formed on each supporting element, and described tightening nut is connected on the respective end portions of the described clamping bolt that passes described hole, therefore can fix and support the lower plate of described time adjacent thermal shield by single supporting element, perhaps described Connection Step also can carry out as follows, the described clamping bolt that is about on the fixing described housing is installed as the lower plate that passes described thermal shield, and described tightening nut is connected on the described clamping bolt at the edge that passes described lower plate, thereby fixes and support described time thermal shield.
Described secondary barrier forms step and comprises: described tongue piece 25 is inserted the tongue piece installation steps on the corresponding top of described thermal shield 20; And backplate 54 inserted between the described tongue piece 24 that is inserted and the respective end portions of described backplate is welded to welding step on the described tongue piece.
In addition, described secondary barrier forms step and can carry out as follows, promptly on the described metal insert that the upper plate with each described thermal shield forms as one two or more backplates and this metal insert is welded to each other; Perhaps this secondary barrier forms step and also can carry out as follows, and the metal insert that is about to be installed on the upper plate of each described thermal shield is welded to each other with the backplate that contacts with this metal insert, and the end of adjacent described backplate is welded to one another.
In addition, in order to strengthen the join strength between described secondary barrier 50 and described the thermal shield 20, can use Bond will constitute the part bonding of the bottom of backplate 54 of described secondary barrier and the upper plate of the inferior thermal shield 20 that contacts with this backplate 54 and fixing.
Form in the step at described adhesive layer, coated with adhesive on described secondary barrier, and between the end of described weldment 55 and described adhesive layer, be formed with the spacing 61 that does not form adhesive layer.
In described main thermal shield installation steps, by described adhesive layer described main thermal shield and described secondary barrier are formed as one, and the bottom of described main thermal shield is bonded on the described secondary barrier by the adhesive layer 60 that is formed between described secondary barrier 50 and the described main thermal shield 10.
Form in the step at this primary barrier, weld two or more adjacent described stainless steel metal sheets by welding manner at the welding appliance 12 that is installed on the described main thermal shield 10, thereby form described primary barrier.
In this case, described primary barrier forms and makes the described gauffer 42 that protrudes be positioned on the two ends and core of each described main thermal shield.
The present invention of said structure has following structure, in this structure, described time thermal shield 10 is fixed reliably and is supported on the described housing by described connection set, described main thermal shield 10 and described thermal shield 20 alternately are stacked as and make the edge of described main thermal shield 20 and the edge of described thermal shield 10 stagger mutually, the described secondary barrier 50 that forms as one is by to being formed on by the backplate 54 that forms of processing foil between described main thermal shield 10 and described the thermal shield 20, and described main thermal shield 10 uses Bond to be bonded to integratedly on the described secondary barrier 50, therefore strengthened the easiness of installing, guarantee tightness, and reduced the required time of sealing of bond traditional secondary barrier and detection LNG Liquefied natural gas.
In addition, the present invention can realize the connection between described thermal shield and the described housing as follows, promptly along the disposed inboard attachment hole of each described thermal shield, by described attachment hole and described connection set described thermal shield is fixed on the described housing, by in described attachment hole, inserting the foam plugs sealing, then as Figure 21 to shown in Figure 30, described main thermal shield be installed as make the edge of described thermal shield and the edge of described main thermal shield stagger mutually.In addition, parts use Fig. 1 that does not describe in detail in the explanation of following structure extremely technology shown in Figure 20 installs.
Describe said structure in detail below in conjunction with Figure 21 to Figure 30.
Figure 21 is the schematic representation that shows the assembly structure of the inferior thermal shield that adopts attachment hole, and Figure 22 is the schematic representation that shows according to the arrangement of attachment hole of the present invention; Figure 23 shows the planeness of described the thermal shield that adopts the attachment hole dress and the schematic representation of degree of deformation, and Figure 24 shows the inferior thermal shield of employing attachment hole assembling and the schematic representation of the relation of the position between the main thermal shield.Connection set 90 is connected on described thermal shield 20 by a plurality of described attachment hole 20a along the disposed inboard of each described thermal shield 20, and makes that therefore described thermal shield 20 is fixing reliably and support on the described housing 70.Described secondary barrier 50 is by being integrally connected to by the backplate that forms of processing foil on described thermal shield 20.Main thermal shield 10 bondings also are stacked on described thermal shield 20, so that the edge of the edge of described main thermal shield 10 and described thermal shield 20 staggers mutually.
That is to say, a plurality of attachment hole 20a are formed on the inboard that is installed as each described the thermal shield 20 that is connected in described housing continuously, described thermal shield 20 connects among the described attachment hole 20a and is fixed on the described housing 70 by described connection set 90 is inserted and is connected to, seal by inserting in the described attachment hole by the foam plugs that thermoinsulation material is made, and form described secondary barrier 50 by on described thermal shield 20, forming by the processing backplate that foil was obtained with welding manner, then with described main thermal shield bonding and be installed on the described secondary barrier 50, and make this main thermal shield and time thermal shield stagger mutually.
Attachment hole 20a is used for by inserting described connection set 90 (for example inserting clamping bolt and tightening nut) described thermal shield 20 being fixed to described housing 70, and attachment hole 20a is formed on described thermal shield 20 and runs through the upper plate 21 of this time thermal shield, shown in Figure 21 to 28.
Preferably, when when the vertical method of described thermal shield 20 is observed, in 15% to 85% the scope of each described attachment hole 20a distance between the two ends of each described thermal shield.
In addition, attachment hole 20a is that the center is symmetrically formed left side and right side or upside and the downside at each described thermal shield with the core of each described thermal shield, act on whole described thermal shields uniform bolt is connected pressure, thereby improved the planeness of described thermal shield, and made the degree of deformation of described thermal shield minimize.
As shown in figure 22, when when the horizontal direction of described thermal shield 20 is observed, above-mentioned attachment hole forms and makes and be arranged in the upside and the downside of each described thermal shield at six attachment holes between the two ends of each described thermal shield and on the core in the mode of three of every sides, as shown in figure 22.That is to say, in traditional adiabatic system, be used for the attachment hole that described thermal shield is fixed on the described housing is formed the two ends that are positioned at each described thermal shield, to eliminate the interference between the described main thermal shield.But when when the horizontal direction of described thermal shield 20 is observed, attachment hole according to the present invention forms in 15% to 85% the scope of between the edge of each described thermal shield distance, rather than is formed on the edge of each described thermal shield.
In addition, the lower plate 22 of described thermal shield has the length identical with described thermoinsulation material 23.
In the present invention with said structure, when described main thermal shield was stacked on described thermal shield, described main thermal shield was stacked as on described thermal shield and makes the edge of these times thermal shield and the edge of main thermal shield stagger mutually, as shown in figure 24.
Figure 26 is the schematic representation that shows according to the first modified arrangement mode of attachment hole of the present invention.On four corner parts on each described thermal shield, be formed with respective connecting, and the longitudinal direction of this time of the core upper edge thermal shield on each described thermal shield is formed with three attachment holes with regular spaces, connects pressure thereby apply uniform bolt.
Figure 27 is the schematic representation that shows according to the second modified arrangement mode of attachment hole of the present invention.Attachment hole is formed on each described thermal shield, and is arranged symmetrically in the upside of each described thermal shield and downside to have diamond shape.
That is to say, in the present invention, on the center of gravity of each described thermal shield, be formed with attachment hole, and two groups of attachment holes (attachment hole that comprises above-mentioned formation) are arranged to diamond shape, connect pressure thereby can apply uniform bolt.
Figure 28 is the 3rd modified arrangement mode that shows according to attachment hole of the present invention.Attachment hole is formed on the edge section of each described thermal shield with regular spaces, and along being formed with respective connecting on the marginal crossing position of the longitudinal direction of the attachment hole of these edge sections and horizontal direction.
That is to say that attachment hole is formed on the left side and the right side of each time thermal shield, and be positioned on the position of the attachment hole same distance on the core that is formed on each described thermal shield, connect pressure thereby can apply uniform bolt.
Become to improve the present invention who is connected between described thermal shield and the described housing hereinafter with reference to the following example description architecture.
Embodiment:
In length is that 3030mm, width are that 990mm, thickness are to be formed with six attachment holes that diameter is 45mm on each time thermal shield of 170mm, these six attachment holes are positioned at along on 25% and 75% the position of the axis of pitch of described thermal shield, and symmetric arrangement is formed with three attachment holes for to be formed with three attachment holes in the left side of each described thermal shield on the right side of each described thermal shield.In this case, described attachment hole forms makes along the distance between the attachment hole of horizontal direction to be 495mm, and the distance between the attachment hole along the longitudinal direction is 1010mm.Therefore, the amount of deformation that takes place when connecting clamping bolt and tightening nut by above-mentioned attachment hole is assessed (in this case, the thickness of described upper plate and lower plate is 9mm).
Figure 25 is the schematic representation that shows according to the deformation extent of the embodiment of the invention.Can see that the maximum deformation quantity of (Y direction) is 0.048mm along the longitudinal direction, and this distortion occurs in the end of each described thermal shield.
Comparative Examples:
In length is that 3030mm, width are that 990mm, thickness are to be formed with ten attachment holes that diameter is 45mm on each time thermal shield of 170mm, these ten attachment holes are symmetrically formed to the left end at each time thermal shield and are formed with five attachment holes, right-hand member at each time thermal shield is formed with five attachment holes, and the formation method of these ten attachment holes is identical with the method that forms attachment hole on the inferior thermal shield of described traditional adiabatic system.In this case, described attachment hole forms makes along the distance between the attachment hole of horizontal direction to be 880mm, and the distance between the attachment hole along the longitudinal direction is 730mm.Therefore, when stating attachment hole in the use, the amount of deformation that takes place is assessed (in this case, the thickness of described lower plate is 9mm) when connecting clamping bolt and tightening nut by above-mentioned attachment hole.
Figure 30 is the schematic representation that shows based on the deformation extent of Comparative Examples of the present invention.Can see that the maximum deformation quantity of (Y direction) is 0.050mm along the longitudinal direction, and should distortion take place along the longitudinal direction.
The present invention is not limited to above-mentioned specific preferred implementation.In addition, the technician with general knowledge of the technical field of the invention is to be understood that, can carry out multiple modification and have multiple specific implementation form under the prerequisite that does not break away from the desired the present invention's design of claim, these modification include within the scope of the claims.

Claims (23)

1. LNG Liquefied natural gas storage/transportation case adiabatic system with secondary barrier of welding, wherein:
A plurality of thermal shields that are used for installing continuously to be connected in housing are connected in described housing by connection set,
On described thermal shield, form secondary barrier by welding by processing formed each backplate of foil,
After described secondary barrier forms adhesive layer, by this adhesive layer bonding and main thermal shield is installed on described thermal shield, and make this main thermal shield and described thermal shield stagger mutually, and
On described main thermal shield, primary barrier is installed by welding manner,
Wherein, the described main thermal shield upper plate that is configured to be made by timber or synthetic resin is formed on the upper surface of thermoinsulation material.
2. LNG Liquefied natural gas storage/transportation case adiabatic system according to claim 1, wherein, described secondary barrier forms as follows, promptly along a direction of this time thermal shield tongue piece is installed, and the two ends of each described backplate are welded on the corresponding tongue piece that is installed on the described time adjacent thermal shield in the corresponding center region on the top of described thermal shield.
3. LNG Liquefied natural gas storage/transportation case adiabatic system according to claim 1, wherein, described secondary barrier forms as follows, promptly on each described thermal shield metal insert is installed, and is welded with two or more adjacent described backplates on this metal insert.
4. LNG Liquefied natural gas storage/transportation case adiabatic system according to claim 1, wherein, described secondary barrier forms as follows, promptly on each described thermal shield, one or more metal inserts are installed, this metal insert is welded to each other with the respective end portions of the described backplate that contacts with this metal insert, and the edge of adjacent backplate contacts with each other and welds.
5. according to each described LNG Liquefied natural gas storage/transportation case adiabatic system in the claim 1 to 4, wherein, described secondary barrier is made by metallic material, is for example made by invar alloy, stainless steel or aluminum alloy.
6. according to claim 2 or 4 described LNG Liquefied natural gas storage/transportation case adiabatic systems, wherein, the bending of the weldment of the respective end of described backplate is for protruding upward.
7. LNG Liquefied natural gas storage/transportation case adiabatic system according to claim 1, wherein, described time thermal shield forms as one with described upper plate of being made by timber or synthetic resin and the lower plate of being made by timber, synthetic resin or thin metalwork.
8. LNG Liquefied natural gas storage/transportation case adiabatic system according to claim 7, wherein, described thermal shield is configured to be formed with the tongue piece insertion groove on the corresponding core of described upper plate, and described tongue piece is installed in this tongue piece insertion groove along a direction of described thermal shield.
9. LNG Liquefied natural gas storage/transportation case adiabatic system according to claim 8, wherein, each described tongue piece insertion groove forms has "T"-shaped shape or " L " shape shape.
10. LNG Liquefied natural gas storage/transportation case adiabatic system according to claim 1, wherein, each described connection set comprises: clamping bolt, this clamping bolt are fixed on the described housing and are positioned between the described time adjacent thermal shield; Supporting element, this support configuration is porose for forming with regular spaces at this supporting element, and described clamping bolt is inserted in this hole, and the both sides lower surface of this supporting element contacts with the upper surface of the edge section of described thermal shield; And tightening nut, this tightening nut is connected to the respective end portions of the described clamping bolt that stretches out in this hole of Kong Bingcong of passing described supporting element.
11. LNG Liquefied natural gas storage/transportation case adiabatic system according to claim 1, wherein, each described connection set comprises: clamping bolt, this clamping bolt are fixed on the described housing and are positioned on the described time adjacent thermal shield; Supporting element, this supporting element is provided with porose, and described clamping bolt inserts in this hole, and this support arrangement is to make the both sides lower surface of this supporting element contact with the upper surface of the edge section of the lower plate of described thermal shield; And tightening nut, this tightening nut is connected to the end of the described clamping bolt that stretches out in this hole of described Kong Bingcong of passing described supporting element.
12. LNG Liquefied natural gas storage/transportation case adiabatic system according to claim 1, wherein, each described connection set comprises: clamping bolt, this clamping bolt are fixed on the described housing and are positioned between the described time adjacent thermal shield; Supporting element, this supporting element is provided with porose, described clamping bolt inserts in this hole, and this support configuration is to make the respective end portions of this supporting element be inserted in the insertion groove on the thermoinsulation material that is formed on described thermal shield, and the lower surface of the end of the insertion of this supporting element contacts with the upper surface of the edge section of the lower plate of described thermal shield; And tightening nut, this tightening nut is connected to the end of the described clamping bolt that stretches out in this hole of described Kong Bingcong of passing described supporting element.
13. LNG Liquefied natural gas storage/transportation case adiabatic system according to claim 1, wherein, described connection set is fixed thermal shield as follows described time, being about to described clamping bolt is installed on the described housing, form stretch out form on the edge section of the described lower plate of Duoing than described polyurethane adiabatic material porose, this hole is constructed so that described clamping bolt is inserted in this hole and from this hole and stretches out, and the respective end portions of the described clamping bolt that stretches out in passing this hole of described Kong Bingcong is connected with tightening nut.
14. according to claim 1,10,11,12 or 13 described LNG Liquefied natural gas storage/transportation case adiabatic systems, wherein, at the thermoinsulation material of on the connection set between the described time adjacent thermal shield, installing and be positioned with insertion.
15. LNG Liquefied natural gas storage/transportation case adiabatic system according to claim 1, wherein, in 60% to 99% the scope of the width of the described adhesive layer of each of formation width between the two ends of each described backplate.
16. LNG Liquefied natural gas storage/transportation case adiabatic system according to claim 1 wherein, forms the metal insert of being made by metallic material on the corresponding upper plate of described main thermal shield.
17. LNG Liquefied natural gas storage/transportation case adiabatic system according to claim 1, wherein, described primary barrier forms and makes be positioned with gauffer on the two ends of described each main thermal shield and core.
18. according to each described LNG Liquefied natural gas storage/transportation case adiabatic system in the claim 1 to 4, wherein, the part of upper surface that constitutes the upper plate of the part of lower surface of described backplate of described secondary barrier and described thermal shield contacting with described backplate uses Bond to bond mutually.
19. LNG Liquefied natural gas storage/transportation case adiabatic system according to claim 1, wherein, described time thermal shield is fixed reliably as follows and is supported on the described housing, is about to described connection set and is inserted through along a plurality of attachment holes and the connection of the disposed inboard of each described thermal shield.
20. LNG Liquefied natural gas storage/transportation case adiabatic system according to claim 19, wherein, be formed in 15% to 85% the scope of attachment hole on each described thermal shield distance between the two ends of each described thermal shield and and be symmetrically arranged with regular spaces.
21. LNG Liquefied natural gas storage/transportation case adiabatic system according to claim 19, wherein, the attachment hole that is formed on each described thermal shield comprises attachment hole on the edge section that is arranged in each described thermal shield and the attachment hole of arranging along the core of each described thermal shield with regular spaces on the longitudinal direction of described thermal shield.
22. the construction method of the LNG Liquefied natural gas storage/transportation case adiabatic system of the secondary barrier with welding, this construction method comprises:
Housing/thermal shield link and connection set are installed to first installation steps on the housing, and wherein said connection set is adhesive and clamping bolt;
Inferior thermal shield is installed to inferior thermal shield installation steps on described housing/thermal shield link continuously;
The described time whole adjacent thermal shield that to install continuously by described connection set is fixedly coupled step;
The secondary barrier that is formed secondary barrier by welding by the processing formed a plurality of backplates of foil on described time fixing thermal shield forms step;
The adhesive layer that forms adhesive layer by coated with adhesive on the described secondary barrier that forms forms step;
By described adhesive layer bonding that applies and the main thermal shield installation steps that main thermal shield is installed; And
On the described main thermal shield of welding, form the step of primary barrier with gauffer.
23. construction method according to claim 22, wherein, described secondary barrier forms step and comprises: the top of tongue piece being inserted described time fixing thermal shield, described backplate is inserted between the corresponding sidepiece of the described tongue piece that is inserted, and the respective end portions of described backplate is welded on the described tongue piece.
CN2007800535565A 2007-05-29 2007-11-28 LNG storage tank insulation system having welded secondary barrier and construction method thereof Expired - Fee Related CN101688640B (en)

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KR1020070052106 2007-05-29
KR10-2007-0052106 2007-05-29
KR1020070052106A KR100782737B1 (en) 2007-05-29 2007-05-29 Insulation system having the secondary barrier welded and its fabrication procedure for lng cargo containment system
KR1020070112826 2007-11-06
KR1020070112826A KR100935516B1 (en) 2007-11-06 2007-11-06 Installation method of the secondary insulation panel for LNG carrier
KR10-2007-0112826 2007-11-06
PCT/KR2007/006069 WO2008147003A1 (en) 2007-05-29 2007-11-28 Lng storage tank insulation system having welded secondary barrier and construction method thereof

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CN112032550A (en) * 2020-11-06 2020-12-04 中太海事技术(上海)有限公司 A bimetal low temperature film storage cabin for liquefied natural gas stores
CN112032550B (en) * 2020-11-06 2021-03-26 中太海事技术(上海)有限公司 A bimetal low temperature film storage cabin for liquefied natural gas stores
CN114440117A (en) * 2020-11-06 2022-05-06 中太海事技术(上海)有限公司 Standard template for storage structure and liquefied natural gas storage structure
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US11598484B2 (en) 2020-11-06 2023-03-07 Sinotech Marine Co., Ltd. Bimetallic cryogenic membrane storage compartment for LNG storage
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WO2008147003A1 (en) 2008-12-04
JP5337796B2 (en) 2013-11-06
ES2383392B1 (en) 2013-05-03

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